Concrete construction.



J. E. UONZELMAN. CONCRETE CONSTRUCTION.

APPLICATION TILED 33.29, 1909.

Patented June 14.1910.

UNITED sTAfgns JOHN E. CONZELMAN, OF ST. LOUIS,

TO UNIT CONSTRUCTION COMPANY, A CORPORATION OF ATENT OFFICE.

MISSOURI, ASSIGNOR, BY mnsu'n Assionutnmis,w

DELAWARE;

coucnn'rn CONSTRUCTION.

To all whom it may concern:

Be it known that I, JOHN E. CONZELMAN,

- u citizen of the United States, residing at concrete slabs the city of St. Louis, State of Missouri, have invented certain new and useful Improvements in Concrete Construction, of which the following is a specification, reference being drawin ,This invention relates to concrete building structures, and pertains to'the class of structures set forth and described in my co-pending application for patent, Serial No. $71,431, filed Jun. 9, 190$), of which this ap plication is a division. The structures set forth therein refer to buildings in which are used for ceilings and floors, and are supported at their corners or intermediate points by uprights or columns.

It is the objcct'of this invention to provide a structure of concrete building elements which cooperate and are interenguged to form it rigid, secure and lasting jointure of said elements.

It isulso an object to provide a concrete building structure in which the general construction of the cooperating uprights and horizontal members is generally improved, to present :1 nenteppeurancc as Well as to prove of'strong and durable nature.

In the drawings, which form a part of this specification and in which like numbers of reference indicate like parts, Figure 1 is u longitudinal section taken throu 'h the supporting columns and slabs, and Fig. .2 is u scctionul View taken on line 11 of Fig. 1.

.1 indicates a column forming one of the" upper supporting members of a building strluaturc,and resting upon a lower column 13. Column-l is fori'ncd in the plastic state with its lulsc, formed within casting 2, a, casting having internal, integral rings 3 forming flows and in which it burdens, thus ll'ltlkili it extrcmely'diflicult to separate the base 0 said column from said custingQ. A flange 5,turnedinwztrdly from casting 2, contributes to the same end. On the exterior of casting 2, flange 6 is provided, said flange having perforations 7, through which bolts 8 pass. .The custing 2 rests on a plate 9 having perforations 10 and being seated on the. upper end of column 13.. Bolts 8 pass through said perforations, end intoa cup 12 Specification of Letters Patent.

had therein to the accompanying inclosing grooves 4, in which the concrete- Patented June 14, 1910. Divided and this application filed April 29,

'formed on colunin 13, said plate being unchored to stud 11 on cap 12 of column 13, by anchor bolts 14 assing through said plate 9 and extending diieply lnto the concrete of said cap, which sets with said anchor bolts embedded therein.

'By the construction above described, a rigid and durable joint is secured between the abutting ends of the columns 1 and 13, and means is provided for the support of the horizontal members of the building con struction.

Having thusdescribod my said invention, what I claim and desire to secure by Letters- Patent is:

asupporting column, a cap formed around .the upper column below the top' thereof, slabs seating on said cap: and having their up r sides disposed flush withsaid top of Sen column, s second column superposed upon said sup.- porting column, said supporting column and extending over onto the 11 per sides of said slabs, means to anchor sai plate to the supporting column, and means to secure said second said plate.

2. A concrete construction, combination, a supporting formed around the upper column below comprising, in column, a cap portion of the posed flush with said top-of said column, a second column superposed upon said supporting column, a plate seating on top of a plate seating on top of .column to.

1. A concrete construction, comprising, in I the top thereof, slabs Seating, on said cap and having their upper sides dissaid supporting column and extending over,

onto the upper the lower end of said secon column, an outstanding peripheral flange carried by said casting, and bolts extendin through openings provided therefor in flange and plate whereby the two columns are il idly connected.

3. i concrete structure, comprising in con'ibinut ion, a supporting column, at ca formed around. the upper portion of sci sides of said slabs, a casting column below the top thereof, slabs having and having their edges seated on said 023) .ush with't-he their upper sides occurring upper endof said supporting column, a seccolumn superposed upon said supporting column, a casting surrounding the base of said second column, and forming a part thereof, and means for securing said casting to said supporting column.

4. A concrete structure, comprising in combination, a supporting column, a ca surrounding the upper portion of sai column, below the top thereof, a plate resting on said column and extendin over the top thereof, slabs having their e ges seated on said cap and below said plate, a casting bolted to said plate and a second column havin its basemolded within said casting.

5. E concrete structure, comprising in combination a Supporting column, a cap formed on said sup orting column below'the'to thereof, a p ate seated on the top of sai column and extending over the edgesof said top, bolts entered through said plate and extended into said supporting column, slabs having their edges seated on said cap and below said plate, and a casting having internal ribs seated on said plate and havin an external flan e, bolts entered throug said plate and said external flange to secure said casting to said plate, and a column having its base molded within said casting.

n testimony whereof I have affixed my signature in presence of two witnesses.

JOHN E. CONZELMAN. 

